Road grader and scraper



(N0 Model.)

P. RAAB. ROAD GRADBR AND SORAPBR.

No. 288,261. Patented NOV.,13, 1883.

(5mm; 07: W m

Unrrnn S'rarns Parent @rrrcn PETER RAAB, OF YVARBEN, MARION COUNTY, INDIANA.

ROAD GRADER A ND SCRAPER.

SPECIFIGATIGN formingpart of Letters Patent No, 288,261, dated November Application filed m 1s,1ss2. (No model.)

' eral figures of which like letters indicate like gear of the wagon,

parts.

My invention has for its object the construction of a machine for scraping and grading highways and making open ditches, wherein the scraper is so attached to its supporting frame-work that it can readily be raised or lowered at either end, as desired, and, further, so that the scraper, together with its supporting-frame, can be readily attached to and used with ordinary wagon-gear.

In the drawings, Figure 1 is a perspective view of my machine. Fig. 2 is a top view, and

Fig. 3 a side view with cross-section of the wagonaxles.

The frame-work in which the scraper and its levers'and guides move is of triangular form, and the front end'enters the forward as shown at I, and is securely held by the king-bolt. The wide rear end of this frame rests upon the rear axle,

and is held in place by curved clamps or hooks (i, one of which passes under the axle on each side, and the upper end passes through the rear bars, H H, of the frames, and is threaded to receive a nut, which holds it in place.

The scraper A is attached at cit-her end by rods B B to levers or handlesC O,which are respectively pivoted at b b to the upright standards D D,which are int-urn connected on either side by crosspieces E E; The standard D is also secured to the triangular bed-frame by the brace K. The upper ends of the rods B B are bifurcated, and provided with aligned openings. The levers O O are adjustablysecured between the bifurcated ends of said rods, as shown in Figs. 1 and 3. The holes in said bifurcated ends receive the pins that secure the levers G G. Between the standards D D are two other uprights-one short, F, and one longer, F, on the latter of. which is a series of catchesto hold the levers in place. These uprights F F are fastened to the cross=pieces E E, and pass up between them, and a brace, K", connects the piece F ards D, D, and F, suitably bar or bars to the running-gear of a vehicle,

with the triangular bed-frame. e and e are staples, which serve to guide the movement of the scraper upon the uprights D and F as it is raised and lowered, and the short uprights G G G which are secured to the scraper, also serve as guides for the latter in its vertical adjustment and as straps to prevent it from shifting diagonally endwi'se while in operation; The rear portion of the bed-frame is floored over, to give the operator standingroom as he operates the machine; and the bed-frame is still further secured to thewagon by a bolt passing through the hounds of the wagon and a crosspiece beneaththe floor. (Not shown.)

My machi e operates as follows: Power be ing applied to the front end of the wagon, it moves forward, carrying the scraper, which is suspended diagonally across the track, as shown in Fig. 2. The operator raises or lowers the scraper at either end by means of the levers O G, and secures them in place by the catches c 0 upon the upright F. If an ob- What I claim, and deslre to secure by Letters Patent, is-

j 1. In a road scraper and grader, the standards D, D, and F, suitably secured by crossbar to the running-gear of a vehicle, in combination with the scraper A, suspended by rods B B, jointed to levers O C, said levers being pivoted to the standards D D, and secured in the catches c c on standard F, whereby the vertical displacement'of the scraper disengages the lever-handles and permits the scraper to rideover the obstacle, substantially as specified. I

2. In a road scraper and grader, the standsecured by cross in combination with the scraper A, provided with guide-staples e 6, said scraper being sus-- pended by rods B B, jointed to levers O C, said levers being pivoted to standards D D, substantially as described, and for the purposes set forth. Y

vers being pivoted to standards D D, and the handles thereof secured in the catches a c on the standard F, substantially as 'described,

and for the purposes set forth.

4. In a road scraper and grader, the standards D, D, and F, suitably secured by crossbar to the running-gear of a vehicle, in combinationwith the scraper A, provided with guide-staples e e, and upright guides G G G, said scraper being suspended and operated in the manner and for the purposes specified.

5. In a road scraper and grader, the standards D, D, F, and F, secured by cross bar to the runnin g-gear of a vehicle, and the bracerods K K, in combination with the scraper A, rods B B, and pivoted levers O 0 substantially as described, and for the purposes set forth.

In witness whereof I have hereunto set my hand at Indianapolis, this 13th day of May, 1882.

\Vitnesses:

O. P. J AOOBS, TM. DETRICK.

PETER RAAB. 

